Question

A certain material has a normal freezing point of 10ºC and a normal boiling point of 70ºC. What state is the material in at room temperature (about 22ºC)? Explain your answer.

Answer 1

Explanation:

A freezing point is defined as the point in which a liquid state of a substance changes into solid state.

Whereas boiling point is defined as the point at which liquid state of substance starts to convert into vapor state.

So, a substance is freezing at $10^{o}C$ and boils at $70^{o}C$ then it means at room temperature, that is, around $25^{o}C$ the substance is present in liquid state.

This is because between the freezing and boiling point a substance will always exist in liquid state.

Thus, we can conclude that state of the material at room temperature is liquid.